Dominik Klein wrote:


Did you check FAT-permissions?
When mounting a FAT-partition, you have to set explicit permissions while mounting as FAT does not understand the unix permission concept.

Try to mount this way:
mount -t vfat -o uid=mysql,gid=mysql,rw,umask=007 /dev/[yourdevicename] /your/mountpoint

Hi  Dominik,

In /etc/fstab the partition is mounted with this line:
   /dev/hdb2        /mnt/FAT        vfat    uid=27,gid=27,umask=000  0 0
...which I think is the same as what you recommend (uid  27 is "mysql") .

What I really don't understand is:
Why mysqld will start up and use the dataq on the FAT partition (as I want it to do) if I start it with "mysqld_safe", but when I boot the computer or try, as root, "service mysqld start", it fails to start with these log errors:
   060421 08:43:10  mysqld started
060421 8:43:11 [Warning] Can't create test file /mnt/FAT/mysqldata/localhost.lower-test /usr/libexec/mysqld: Can't change dir to '/mnt/FAT/mysqldata/' (Errcode: 13)
   060421  8:43:11 [ERROR] Aborting

I'm guessing that since mysqld_safe runs as user mysql, maybe mysqld runs as a different user?
How would I find that out?

I will keep  reading the manual,  but  will be grateful for  any ideas.



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